Understand the fundamentals of IBM Blockchain
Blockchain technologies present opportunities for disruptive innovation. It enables global business transactions with less friction and more trust.
Download Blockchain for Dummies https://www.ibm.com/blockchain/

Bitcoin - Next Generation Money. We are experts to provide complete solution for your business with targeted solution and unlock all your possibilities from your existing system and the current system.
https://www.bitxchenge.com/

Bitcoin Knots
Bitcoin Knots is a full Bitcoin client and builds the backbone of the network. It offers high levels of security, privacy, and stability. It includes more advanced features than Bitcoin Core, but they are not as well-tested. It uses a lot of space and memory.
https://bitcoink

GreenAddress
GreenAddress is a user-friendly multi-signature wallet with improved security and privacy. At no time are your keys server side, even encrypted. For security reasons, you should always use 2FA and the browser extension or Android App.